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Metals 2017, 7(4), 118; doi:10.3390/met7040118

Investigating the Wear Behavior of Fe-Based Amorphous Coatings under Nanoscratch Tests

School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
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Received: 23 January 2017 / Revised: 23 March 2017 / Accepted: 24 March 2017 / Published: 29 March 2017
(This article belongs to the Special Issue High-Entropy Alloys (HEAs))
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Abstract

The wear behavior of two coatings (Fe49.7Cr18Mn1.9Mo7.4W1.6B15.2C3.8Si2.4 and Fe40Cr23Mo14C15B6Y2) sprayed by high-velocity air fuel technology was investigated through nanoscratch tests under ramping loads. Compared with the substrate, the Fe-based amorphous coatings exhibit lower penetration depth, higher elastic recovery, and lower wear volume, indicating the excellent wear resistance of the coatings. This behavior is related to the high hardness and high hardness/elastic modulus ratio (H/E) of the Fe-based amorphous coatings. From the scanning electron microscopy images of the scratch grooves, it is found out that ploughing governs the wear behavior of the coatings and substrate. In addition, spalling wear easily occurs in the pore regions of the coatings. View Full-Text
Keywords: amorphous coating; HVAF; wear resistance; nanoscratch amorphous coating; HVAF; wear resistance; nanoscratch
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Wu, Y.; Luo, Q.; Jiao, J.; Wei, X.; Shen, J. Investigating the Wear Behavior of Fe-Based Amorphous Coatings under Nanoscratch Tests. Metals 2017, 7, 118.

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